polyglot.ext.jl.ast
Class While_c

java.lang.Object
  polyglot.ext.jl.ast.Node_c
      polyglot.ext.jl.ast.Term_c
          polyglot.ext.jl.ast.Stmt_c
              polyglot.ext.jl.ast.Loop_c
                  polyglot.ext.jl.ast.While_c

All Implemented Interfaces:

java.lang.Cloneable, CompoundStmt, JL, Loop, Node, NodeOps, Stmt, Term, While, Copy

public class While_c
extends Loop_c
implements While

An immutable representation of a Java language while statement. It contains a statement to be executed and an expression to be tested indicating whether to reexecute the statement.

Field Summary

protected Stmt	body
protected Expr	cond

Fields inherited from class polyglot.ext.jl.ast.Term_c

exceptions, reachable

Fields inherited from class polyglot.ext.jl.ast.Node_c

del, ext, position

Constructor Summary

While_c(Position pos, Expr cond, Stmt body)

Method Summary

java.util.List	acceptCFG(CFGBuilder v, java.util.List succs) Visit this term in evaluation order.
Stmt	body() Get the body of the statement.
While	body(Stmt body) Set the body of the statement.
Type	childExpectedType(Expr child, AscriptionVisitor av) Get the expected type of a child expression of this.
Expr	cond() Get the conditional of the statement.
While	cond(Expr cond) Set the conditional of the statement.
Term	continueTarget() Target of a continue statement in the loop body.
Term	entry() Return the first (sub)term performed when evaluating this term.
void	prettyPrint(CodeWriter w, PrettyPrinter tr) Write the statement to an output file.
protected While_c	reconstruct(Expr cond, Stmt body) Reconstruct the statement.
java.lang.String	toString()
Node	typeCheck(TypeChecker tc) Type check the statement.
Node	visitChildren(NodeVisitor v) Visit the children of the statement.

Methods inherited from class polyglot.ext.jl.ast.Loop_c

condIsConstant, condIsConstantTrue

Methods inherited from class polyglot.ext.jl.ast.Term_c

exceptionCheck, exceptions, exceptions, listEntry, reachable, reachable

Methods inherited from class polyglot.ext.jl.ast.Node_c

addDecls, addMembers, addMembersEnter, addMembersOverride, buildTypes, buildTypesEnter, buildTypesOverride, copy, del, del, disambiguate, disambiguateEnter, disambiguateOverride, dump, enterScope, enterScope, exceptionCheckEnter, exceptionCheckOverride, ext, ext, ext, ext, init, node, position, position, print, printBlock, printSubStmt, throwTypes, translate, typeCheckEnter, typeCheckOverride, visit, visitChild, visitEdge, visitList

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface polyglot.ast.Loop

condIsConstant, condIsConstantTrue

Methods inherited from interface polyglot.ast.Term

exceptions, exceptions, reachable, reachable

Methods inherited from interface polyglot.ast.Node

del, del, dump, ext, ext, ext, ext, position, position, visit, visitChild, visitEdge, visitList

Methods inherited from interface polyglot.ast.JL

init, node

Methods inherited from interface polyglot.ast.NodeOps

addDecls, addMembers, addMembersEnter, buildTypes, buildTypesEnter, disambiguate, disambiguateEnter, enterScope, enterScope, exceptionCheck, exceptionCheckEnter, throwTypes, translate, typeCheckEnter

Methods inherited from interface polyglot.util.Copy

copy

Field Detail

cond

protected Expr cond

body

protected Stmt body

Constructor Detail

While_c

public While_c(Position pos,
               Expr cond,
               Stmt body)

Method Detail

cond

public Expr cond()

Get the conditional of the statement.

Specified by:

cond in interface Loop

cond

public While cond(Expr cond)

Set the conditional of the statement.

Specified by:

cond in interface While

body

public Stmt body()

Get the body of the statement.

Specified by:

body in interface Loop

body

public While body(Stmt body)

Set the body of the statement.

Specified by:

body in interface While

reconstruct

protected While_c reconstruct(Expr cond,
                              Stmt body)

Reconstruct the statement.

visitChildren

public Node visitChildren(NodeVisitor v)

Visit the children of the statement.

Specified by:

visitChildren in interface NodeOps

Overrides:

visitChildren in class Node_c

Parameters:

v - The visitor that will traverse/rewrite the AST.

Returns:

A new AST if a change was made, or this.

typeCheck

public Node typeCheck(TypeChecker tc)
               throws SemanticException

Type check the statement.

Specified by:

typeCheck in interface NodeOps

Overrides:

typeCheck in class Node_c

Parameters:

tc - The type checking visitor.

Throws:

SemanticException

childExpectedType

public Type childExpectedType(Expr child,
                              AscriptionVisitor av)

Description copied from interface: Node

Get the expected type of a child expression of this. The expected type is determined by the context in that the child occurs (e.g., for x = e, the expected type of e is the declared type of x. The expected type should impose the least constraints on the child's type that are allowed by the parent node.

Specified by:

childExpectedType in interface Node

Overrides:

childExpectedType in class Node_c

Parameters:

child - A child expression of this node.

av - An ascription visitor.

Returns:

The expected type of child.

toString

public java.lang.String toString()

Overrides:

toString in class Node_c

prettyPrint

public void prettyPrint(CodeWriter w,
                        PrettyPrinter tr)

Write the statement to an output file.

Specified by:

prettyPrint in interface NodeOps

Overrides:

prettyPrint in class Node_c

Parameters:

w - The code writer to which to write.

tr - The pretty printer. This is not a visitor.

entry

public Term entry()

Description copied from class: Term_c

Return the first (sub)term performed when evaluating this term.

Specified by:

entry in interface Term

Specified by:

entry in class Term_c

acceptCFG

public java.util.List acceptCFG(CFGBuilder v,
                                java.util.List succs)

Description copied from class: Term_c

Visit this term in evaluation order.

Specified by:

acceptCFG in interface Term

Specified by:

acceptCFG in class Term_c

continueTarget

public Term continueTarget()

Description copied from interface: Loop

Target of a continue statement in the loop body.

Specified by:

continueTarget in interface Loop